feat: add TypeScript definitions for next-auth session with accessToken and user details

_archive/frontend/auth.ts

@@ -0,0 +1,77 @@
+import NextAuth from 'next-auth';
+import Credentials from 'next-auth/providers/credentials';
+
+const BACKEND_URL = process.env.NEXT_PUBLIC_API_URL_INTERNAL ?? 'http://recipe-api:8080';
+
+export const { handlers, auth, signIn, signOut } = NextAuth({
+  providers: [
+    Credentials({
+      credentials: {
+        username: { label: 'Användarnamn', type: 'text' },
+        password: { label: 'Lösenord', type: 'password' },
+      },
+      async authorize(credentials) {
+        if (!credentials?.username || !credentials?.password) return null;
+        try {
+          const res = await fetch(`${BACKEND_URL}/api/auth/login`, {
+            method: 'POST',
+            headers: { 'Content-Type': 'application/json' },
+            body: JSON.stringify({
+              username: credentials.username,
+              password: credentials.password,
+            }),
+          });
+          if (!res.ok) return null;
+          const data = await res.json() as { accessToken: string; userId: number; username: string; role: string };
+          return {
+            id: String(data.userId),
+            name: data.username,
+            accessToken: data.accessToken,
+            role: data.role,
+          };
+        } catch {
+          return null;
+        }
+      },
+    }),
+  ],
+  callbacks: {
+    jwt({ token, user }) {
+      if (user) {
+        token.accessToken = (user as any).accessToken as string;
+        token.userId = Number(user.id);
+        token.username = user.name ?? '';
+        token.role = (user as any).role as string;
+        // eslint-disable-next-line no-console
+        console.log('[NextAuth JWT callback] Token set:', {
+          hasAccessToken: !!token.accessToken,
+          role: token.role,
+          username: token.username,
+        });
+      }
+      return token;
+    },
+    session({ session, token }) {
+      // eslint-disable-next-line no-console
+      console.log('[NextAuth session callback] Token data:', {
+        tokenAccessToken: token.accessToken,
+        tokenRole: token.role,
+        tokenUserId: token.userId,
+      });
+      if (token.accessToken) {
+        session.accessToken = token.accessToken as string;
+      } else {
+        // eslint-disable-next-line no-console
+        console.warn('[NextAuth session callback] WARNING: No accessToken in token!');
+      }
+      session.user.id = String(token.userId);
+      session.user.name = token.username as string;
+      (session.user as any).role = token.role as string;
+      return session;
+    },
+  },
+  pages: {
+    signIn: '/login',
+  },
+  session: { strategy: 'jwt' },
+});